Short-Term Test Results: Multifamily Home Energy Efficiency Retrofit

Lyons, J.

关键词: DEEP ENERGY RETROFIT;    RISK FACTOR;    HYBRID HEAT PUMP;    SAVINGS TO INVESTMENT RATIO;    RESIDENTIAL;    RESIDENTIAL BUILDING;    BA-PIRC;    BUILDING AMERICA;    Electricity;    Resources;    and Buildings Systems;    Buildings;   

DOI  :  10.2172/1068621
RP-ID  :  DOE/GO-102013-3796
PID  :  OSTI ID: 1068621
Others  :  Other: KNDJ-0-40339-00

学科分类：能源（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Multifamily deep energy retrofits (DERs) represent great potential for energy savings, while also providing valuable insights on research-generated efficiency measures, cost-effectiveness metrics, and risk factor strategies for the multifamily housing industry. The Bay Ridge project is comprised of a base scope retrofit with a goal of achieving 30% savings (relative to pre-retrofit), and a DER scope with a goal of 50% savings (relative to pre-retrofit). The base scope has been applied to the entire complex, except for one 12-unit building which underwent the DER scope. Findings from the implementation, commissioning, and short-term testing at Bay Ridge include air infiltration reductions of greater than 60% in the DER building; a hybrid heat pump system with a Savings to Investment Ratio (SIR) > 1 (relative to a high efficiency furnace) which also provides the resident with added incentive for energy savings; and duct leakage reductions of > 60% using an aerosolized duct sealing approach. Despite being a moderate rehab instead of a gut rehab, the Bay Ridge DER is currently projected to achieve energy savings ≥ 50% compared to pre-retrofit, and the short-term testing supports this estimate.